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Indexed by:期刊论文

Date of Publication:2011-01-01

Journal:MEASUREMENT

Included Journals:SCIE、EI

Volume:44

Issue:1

Page Number:88-95

ISSN No.:0263-2241

Key Words:Inverse magnetostrictive effect; Force sensor; Giant magnetostrictive material rod

Abstract:In order to realize static force measuring and improve the sensitivity of magnetostrictive force sensor, a novel magnetostrictive static force sensor with giant magnetostrictive material rod is presented. A Hall sensor integrated in the sensor is used to measure magnetic flux density variation under force. A special structure surrounding Hall sensor is proposed to improve the sensitivity. The design method of the giant magnetostrictive force sensor is expounded firstly. The magnetic characteristics are analyzed by FEM. A model is developed based on the coupled linear magnetomechanical constitutive equations and the experimental result shows that the model is good at reflecting the force. The optimal bias magnetic field and sensitivity are studied through experiments. The sensor sensitivity is 6.14 times higher than that of the sensor which dose not have a stainless steel ring. The paper lays a foundation for the development of magnetostrictive force sensor with giant magnetostrictive material. Crown Copyright (C) 2010 Published by Elsevier Ltd. All rights reserved.